Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/137630
Title: Achieving amorphous ultralong room temperature phosphorescence by coassembling planar small organic molecules with polyvinyl alcohol
Authors: Wu, Hongwei
Chi, Weijie
Chen, Zhao
Liu, Guofeng
Gu, Long
Bindra, Anivind Kaur
Yang, Guangbao
Liu, Xiaogang
Zhao, Yanli
Keywords: Science::Chemistry
Issue Date: 2019
Source: Wu, H., Chi, W., Chen, Z., Liu, G., Gu, L., Bindra, Anivind K., ... Zhao, Y. (2019). Achieving amorphous ultralong room temperature phosphorescence by coassembling planar small organic molecules with polyvinyl alcohol. Advanced Functional Materials, 29(10), 1807243. doi:10.1002/adfm.201807243
Journal: Advanced Functional Materials
Abstract: Development of novel strategies for achieving amorphous ultralong organic phosphorescence (UOP) at room temperature is highly desired. Herein, a simple approach is reported by coassembling small organic molecules with polyvinyl alcohol (PVA) to afford amorphous UOP. These small organic molecules with planar conformation present quenched triplet state emission in an excessive stacking solid state. When coassembling these molecules with PVA, their planar structures are well confined in coassembly films. Such a confined environment leads to restricted molecular rotation and vibration, permitting these molecules to show stable triplet state and generate UOP. In control studies, corresponding structurally distorted molecules are also coassembled with PVA. However, they exhibit very weak or quenched UOP, since distorted structures with molecular rotation and vibration could easily dissipate the excitation energy in dilute film state. By employing this polymer confinement strategy, multicomponent luminescence dyes are further coassembled with PVA for multicolor luminescence displays, providing multicolor, uniform, and flexible luminescence films. This work demonstrates a general strategy of employing small organic molecules to coassemble with PVA to obtain amorphous UOP, which greatly expands the scope of organic molecules for developing simple but useful UOP films.
URI: https://hdl.handle.net/10356/137630
ISSN: 1616-301X
DOI: 10.1002/adfm.201807243
Rights: This is the peer reviewed version of the following article: Wu, H., Chi, W., Chen, Z., Liu, G., Gu, L., Bindra, Anivind K., ... Zhao, Y. (2019). Achieving amorphous ultralong room temperature phosphorescence by coassembling planar small organic molecules with polyvinyl alcohol. Advanced Functional Materials, 29(10), 1807243. doi:10.1002/adfm.201807243, which has been published in final form at 10.1002/adfm.201807243. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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